he's president of the united states, i look at this and say i can't imagine barack obama or any politician doing this. >> the gun that was used contained two 15-round clips. this man in a manic state was walking down the subway aisle and one of the reasons we ought to pass the crime bill is senator feinstein's amendment to limit assault weapons would make the 15-round clips illegal. they are not necessary for hunting or sports. i hope that this will give more to the need to act urgently to deal with the unnecessary problems of gun violence in the country. >> so, he's making an explicit call for legislation in response to a gun tragedy. it's worth pointing out. the only thing that barack obama has done on guns was make it easier to carry them in national parks. that is basically his record on guns for the last four years. david, you look at that, look at clinton and where we are right now. it's been more than a decade since columbine. are you at all optimistic about guns becoming an issue in politics? >> my optimism comes and goes. it had been low but it's starting to work its way up a litt